![]() ![]() The superior pharyngeal constrictor muscle is innervated by the pharyngeal branch of the vagus nerve via the pharyngeal plexus. The Pharyngeal raphe is a raphe that serves as the origin and insertion for several of the pharyngeal constrictors (thyropharyngeal part of the inferior pharyngeal constrictor muscle, Middle pharyngeal constrictor muscle, Superior pharyngeal constrictor muscle). pharyngeal constrictor Cricopharyngeus Superior ophthalmic vein Posterior belly of digastric muscle Sternocleidomastoid Internal. ActionĪs soon as the bolus of food is received in the pharynx, the elevator muscles relax, the pharynx descends, and the constrictors contract upon the bolus, and convey it downward into the esophagus. The interval between the upper border of the muscle and the base of the skull is closed by the pharyngeal aponeurosis, and is known as the sinus of Morgagni. The superior fibers arch beneath the levator veli palatini muscle and the Eustachian tube. stylohyoid ligament and greater and lesser horns of hyoid bone. The fibers curve backward to be inserted into the median raphe, being also prolonged by means of an aponeurosis to the pharyngeal spine on the basilar part of the occipital bone. and by a few fibers from the side of the tongue ( Glossopharyngeal part) from the alveolar process of the mandible above the posterior end of the mylohyoid line ( Mylopharyngeal part) from the pterygomandibular raphe ( Buccopharyngeal part) the lower third of the posterior margin of the medial pterygoid plate and its hamulus ( Pterygopharyngeal part) ![]() The four parts of this muscle arise from: The muscle is divided into four parts: A pterygopharyngeal, buccopharyngeal, mylopharyngeal and a glossopharyngeal part. posterior, upper part of the hyoid bone and stylohyoid ligament. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |